Malicious PDF — malware analysis report

Static analysis result for SHA-256 4378d1bbe8a25836…

MALICIOUS

PDF

46.8 KB Created: 2020-08-20 13:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f44d09b35f4c4ce96586c9d70617d4a SHA-1: cfca4f14c313bcb8ab92fcdc45a40abf23f3c780 SHA-256: 4378d1bbe8a258365807535576d51e1c81d5e31a4e03b789252ff15c09f65bf9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the primary links, 'https://ttraff.cc/pify?keyword=petit+biscuit+sunset+lover++lagu', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains a mix of text and what appears to be binary data, making it difficult to ascertain a specific user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=petit+biscuit+sunset+lover++lagu In PDF document text
    • http://rijuj.izonewholesale.com/uploads/1/3/1/4/131406427/rikirula.pdfIn PDF document text
    • http://files.sunshinecoastpiano.ca/uploads/1/3/1/4/131437515/f11c91df7d365ad.pdfIn PDF document text
    • http://files.grayduckwatches.com/uploads/1/3/0/7/130739789/4299719.pdfIn PDF document text
    • http://nulim.autokonnect.com/uploads/1/3/1/4/131407227/202bc872e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/lilinapipovile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/dagosowijokeponilekufaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7799/0568/files/risudekaripobinup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9402/1030/files/accounting_dictionary_english_to_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4850/8311/files/pojasuvefakag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/jenness_state_beach_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/the_weeknd_mp3_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/nepapofudumefun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/wivetuwuvasezinekig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/72633364589.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4563 3204 bytes
SHA-256: c55a950687fbf661a764c74ffc1e2c366d177488073d35c52073b3821eed1085
font_01_sfnt_off000050d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D2 5168 bytes
SHA-256: 7ac0c88df1d80f345cd689f44a4dcbb4f05e27fcc14bc07944ee2f6afad68101
font_02_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 6156 bytes
SHA-256: 421a9ca17e76fad1d445ffab70ef65a1338d31cbf2da7023a2dea5bd53697bc0
font_03_sfnt_off00007249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7249 11620 bytes
SHA-256: 3ce2bacb322003db6e08d0c0421a35555c932d4157e994a664ef3ea0f07802bc
font_04_sfnt_off000097dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97DC 16204 bytes
SHA-256: f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce